72440672416613 has 4 divisors (see below), whose sum is σ = 72759794321760. Its totient is φ = 72121550511468.

The previous prime is 72440672416597. The next prime is 72440672416621. The reversal of 72440672416613 is 31661427604427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72440672416613 - 2⁴ = 72440672416597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72440672412613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159560952233 + ... + 159560952686.

It is an arithmetic number, because the mean of its divisors is an integer number (18189948580440).

Almost surely, 2^{72440672416613} is an apocalyptic number.

It is an amenable number.

72440672416613 is a deficient number, since it is larger than the sum of its proper divisors (319121905147).

72440672416613 is a wasteful number, since it uses less digits than its factorization.

72440672416613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319121905146.

The product of its (nonzero) digits is 8128512, while the sum is 53.

The spelling of 72440672416613 in words is "seventy-two trillion, four hundred forty billion, six hundred seventy-two million, four hundred sixteen thousand, six hundred thirteen".